Hi,
Recently I got a VPP crash issue, one worker thread is doing
mutex lock and waiting for getting the mutex, the complete call stack is
arp_learn-> vnet_arp_set_ip4_over_ethernet-> vl_api_rpc_call_main_thread->
vl_msg_api_alloc_as_if_client-> vl_msg_api_alloc_internal-> pthread_mutex_lock
(&q->mutex); while at the same time main thread is calling
vlib_worker_thread_barrier_sync to try to lock all worker threads, this will
lead deadlock and hence VPP crashed.
Did anyone meet the similar issue and how to solve this race
condition? I am using vpp19.01, tried to search the commits related to this
issue for later release but no lucky, not sure if this issue got fixed in later
release .
Appreciate if anyone can help.
BRs,
Kevin
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